You and a friend have come up with an idea for a product that you think will sell on the Internet. Your friend's mom has a lot of money so the two of you plan on asking her for an advance to get the business started. Mom asks some tough questions such as how did you compute how many units do you need to sell before you start making a profit, what assumptions did you make about variable costs, fixed costs, and volume of business. What do you tell her? Remember she is tough :)